Abstract: A ladder hoop having a hoop shaped member with an inner facing surface, an outer facing surface, a top and a bottom. The hoop has two terminating ends forming an opening there between, and each terminating end is adapted to attach to a scaffold ladder. The hoop includes tabs supporting a member movable on the tabs between an open position and a closed position.

Abstract: The invention relates to a double head drilling device for a drill rod having an outer pipe and an inner rod running at least in sections inside the outer pipe, with a first drive unit for driving the inner rod in a rotating manner and a second drive unit for driving the outer pipe in a rotating manner. According to the invention provision is made in that for the releasable clamping of the inner rod a first clamping head and a second clamping head are provided and in that the two clamping heads are supported in an axially displaceable manner with respect to each other. Furthermore, the invention also comprises a method for producing a bore with this double head drilling device.

Abstract: The invention relates to a hydraulic motor (2), comprising a cylindrical motor housing (201) with a central cylindrical rotor (202) carrying longitudinal vanes (208), wherein the vanes (208) are provided at the outer surface of the rotor (202) in such a manner that they can protrude into an annular space between the housing (201) and the rotor (202) in order to create a circumferential driving force on the rotor, wherein the housing (201) comprises inwards pointing salient cams (210) on its inner surface, which separate the annular space between the housing (201) and the rotor (202) into several hydraulic chambers (211) with at least one inlet (212) and at least one outlet (213) for a hydraulic medium, and the vanes (208) can swing around a longitudinal axis that is mostly parallel to the rotation axis of the rotor (202) into the hydraulic chambers (211). The invention further relates to the use of such a hydraulic motor in a drilling system, and a drilling system with such a hydraulic motor.

Abstract: A control system for a drilling machine includes a vertically movable and rotatable drill string having a drill bit at a distal end, a hydraulic cylinder coupled to the drill string to provide a motive force for the vertical movement of the drill string, the hydraulic cylinder having an extend chamber and a retract chamber, a counterbalance valve selectively opening to fluidly couple the retract chamber to a drain, and a holdback valve selectively controlled to adjust the opening of the counterbalance valve based on a weight of the drill string.

Abstract: A drilling apparatus may alter a direction of travel of a drill bit as it forms a borehole in the earth by furnishing the borehole with a cross-sectional shape that urges the drill bit in a radial direction. Such a cross-sectional shape may comprise two circular arcs, one larger than the apparatus and one smaller. The apparatus may be urged away from the smaller circular arc and into the open space provided by the larger circular arc. Such an apparatus may comprise an axial body and a cutting element extendable in a single radial direction from an exterior of the axial body. Extension of the cutting element may allow it to engage and degrade an inner wall of the borehole. An abrasion-resistant gauge pad protruding from the exterior of the body may ride against the borehole wall and urge the body radially.

Abstract: A hybrid rotary guiding device, includes: rotating shaft, the rotating shaft is used to drive the head of a drill tool to rotate, the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, a separation distance exists between the upper shaft portion and the lower shaft portion in the axial direction, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion; the upper shaft portion is installed with at least three first hydraulic mechanisms, and the lower shaft portion is installed with at least three second hydraulic mechanisms, the second hydraulic mechanism is adapted to drive a pushing member against the wall of the well to guide the head of a drill tool, the first hydraulic mechanism and the second hydraulic mechanism are configured so that the first hydraulic mechanism can drive the second hydraulic mechanism to drive the pushing member.

Abstract: A trenchless pipeline installation system and method are provided. The system and method may utilize a venturi pipe system located behind a drill bit and a pipe pushing device to help pull a pipe/cable underground in a continuous one-step process. The system combines a pipe casing, venturi system, mud motor and drill bit in a single, compressed system with a small diameter. The system is especially suitable for allowing a one-step installation of smaller-diameter pipe or cable line under, for example, rivers, hills, ravines, roads, railroads, streets, agricultural and residential areas.

Abstract: At least one labyrinth seal assembly is disposed within a roller cutter of a roller reamer. A first labyrinth seal assembly of a roller cutter is positioned toward a first pillow block of a cutter cartridge that includes the roller cutter. An optional second labyrinth seal assembly is disposed within the roller cutter and toward second pillow block of the cutter cartridge A bearing shaft of the cutter cartridge extends through an inner channel of the roller cutter. The cutter cartridge is retained in an axial recess of a tool body of the roller reamer via a compound and separate wedging of each of the two pillow blocks into a same axial recess. Each pillow block is rotatably coupled to the bearing shaft at an opposing end of the roller cutter.

Abstract: A drilling rig includes a rig floor, first and second support structures, a mast, a lower drilling machine, a continuous drilling unit, an upper drilling machine, and an upper mast assembly. The rig floor includes a V-door defining a V-door axis extending perpendicularly from the side of the rig floor that includes the V-door. The first and second support structures define a traverse corridor having a traverse corridor axis, wherein the traverse corridor axis is perpendicular to the V-door axis. The drilling rig may be used for continuous drilling of a wellbore.

Abstract: This disclosure includes riser-component assemblies and methods of assembling the same that are suitable for managed pressure drilling (MPD) systems. For example, this disclosure includes integrated flow spool and isolation tool riser components that can be permanently coupled together and that can be configured to pass through a rotary table or other rig equipment.

Abstract: A gap joint for use with a gap sub for electromagnetic telemetry. The gap joint has a replaceable uphole shoulder on the male gap joint component, which may be composed of a sacrificial material, to extend gap joint useful life where there is electrolysis of the component outside diameter. The gap joint also has a thicker outside diameter seal to reduce the risk of underlying O-ring extrusion and failure, again extending gap joint useful life. The thicker seal may also be able to withstand higher pressures before collapsing or experiencing punctures in unsupported areas. The replaceable shoulder and outside diameter seal can be used separately or together in a gap joint.

Abstract: A system for facilitating the transmission of rotational torque through a tool when the tool is in tension but allowing free rotation without torque transmission when the tool is in compression and stroked partially or fully closed.

Abstract: A device and method for subterranean operations comprising a latch adapted to be coupled with a fingerboard of a drilling rig, the fingerboard including at least two fingers, wherein: the latch is selectively moveable between an open configuration and a closed configuration, the latch is adapted to selectively permit entrance of a first tubular into a tubular storage area between the at least two fingers when the latch is in the open configuration, and selectively maintain the first tubular in the tubular storage area when the latch is in the closed configuration, and the latch is spaced apart from the fingerboard.

Abstract: An apparatus for moving a tubular may include a column vertically extending from a drill floor, the column defining an axis; a lower carriage connected to the column and configured to carry the column along the drill floor; an upper arm assembly movable along the column, the upper arm assembly being configured to connect with a tubular; and a lower arm assembly having a lower gripper head configured to attach to the tubular, the lower arm assembly being movable to displace the lower gripper head between a position on a first side of the axis and a position on a second side of the axis.

Abstract: A method for determining a concentration of solid particles in a drilling fluid. The method comprises determining, based on a received dimension of a section of a fracture, a plurality of wirelines each having a diameter. For each wireline, the method determines if a solid particle or a part of a fluid is in the current wireline. If it is determined that a solid particle is in the wireline, then determining whether the current wireline is sealed. These steps are reiterated. The method further comprises determining a volume of injected fluid into the fracture and comparing the determined volume with a reference to determine if a fracturing criterion is met. If the fracturing criterion is met, it is possible to modify the current concentration of solid particles.

Abstract: An example liner hanger system includes a casing for lining a wellbore and a collar configured for connection to a part of the casing within the wellbore. The collar has a first shape and a liner hanger has a second shape that is based on the first shape. The liner hanger is configured to fit within, and to be supported by, the collar. The system also includes a screen connected to the liner hanger.

Abstract: This system invention relates to the use of short hop communications to transfer data between two modules inside a well. A system deployed in a well permanently or semi-permanently collects data from downhole parameters such as pressure, temperature, vibration, flow and fluid identification and stores the information in the system memory. The receiver module is deployed in the well via slick line, electric line or coil tubing with the purpose of retrieving the data from the system memory by interfacing with the downhole module via wireless short hop communications. The receiver module can also send commands into the downhole module to change its data collection parameters. Upon completion of the data transfer, the collector is returned to the surface where the data is again wirelessly transferred to a processing system such as a Personal Computer.

Abstract: A natural gas hydrate pressure-retaining corer includes an outer tube assembly and an inner tube assembly installed inside the outer tube assembly. The inner tube assembly includes a first inner tube assembly and a second inner tube assembly. The first inner tube assembly includes a spearhead, a latching device, a suspension plug, a hydraulic piston tube, a piston short limit short section, a limit copper pin, a sealing head, a middle tube, a weight tube drive mechanism and a pressure-retaining ball valve closing sealing mechanism which are sequentially connected from top to bottom. The second inner tube assembly includes a piston compensation balance mechanism, a single-action mechanism, an accumulator mechanism, a sealing mechanism and a core barrel connected sequentially from top to bottom.

Abstract: A chemical capsule joint having a chemical capsule filled with a chemical that is to be released into a casing string to which the chemical capsule joint is deployed in a wellbore after an end of the chemical capsule joint if drilled up. The chemical capsule joint allows continuation of cementing operation until an end of the chemical capsule joint is drilled up to release the chemical from the chemical capsule in the chemical capsule joint. The chemical is then freed from the chemical capsule and allowed to leach into production fluids in the casing string to which the chemical capsule joint is deployed in a well bore.

Abstract: A method of dislodging a tubular string or well equipment connected to the tubular string can include connecting a dislodging tool in the tubular string, so that a flow passage of the dislodging tool extends through the tubular string, deploying a plug into the dislodging tool, applying a pressure differential across the plug, thereby displacing the plug through a seat of the dislodging tool, and dislodging the tubular string or the component in response to the displacing. A dislodging system can include a dislodging tool connected as part of a tubular string, the dislodging tool including a flow passage and a seat configured to sealingly engage a plug deployed into the tubular string, and at least one of a jarring force, load, impact, shock wave, elastic strain release and pressure pulse being generated in the tubular string in response to displacement of the plug through the seat.

Abstract: A modular assembly for a wellhead has a housing and a plurality of modular cartridges. The housing connects with a studded or flanged connection to the wellhead, which can have a tubing adapter, casing hanger, etc. The modular cartridges can interchangeably stack in the housing's internal pocket so that the bores of the stacked cartridges configure the through-bore of the assembly communicating the wellhead with external components, such as flow lines, capillary lines, etc. The modular cartridges include a spacer cartridge, a hanger cartridge, a valve cartridge, and a cross cartridge. The spacer cartridge can be used to space other cartridges in the internal pocket, and the hanger cartridge can be used to support capillary strings and/or velocity strings in the wellhead. The valve cartridges have valve elements that can be opened and closed by bonnets that affix externally to the housing.

Abstract: A subsea system includes in-riser equipment, and a surrounding structure configured to be coupled to a marine riser and a subterranean well. The in-riser equipment is positioned within the surrounding structure, and the surrounding structure comprises a power connection extending radially therethrough. The system also includes a power supply located outside of the surrounding structure. The power supply is connected to the in-riser equipment via the power connection through the surrounding structure, to communicate with the in-riser equipment.

Abstract: A system formed to provide sealed passage therethrough for cables, lines, tubes or the like through the wellhead and down-hole applications. A unitary or split/wrap around hanger is provided having a main seal formed to receive and provide sealed pass-through of power and control cables, lines, conduits, or other components threaded therethrough, which main seal may have various profiles to accommodate diverse component configurations. Hinged side doors engage and support various configuration (via interchangeable inserts) and/or size components such as cable(s), line(s), conduit(s), etc. in the hanger to engage components threaded therethrough. A bowl cap, tubing adapter or other surface component with adapters is provided to allow sealed-pass through of components therethrough, and swivel flanges provide an option to ease installation.

Abstract: A pressure control device for sealing a conduit comprises a seal element comprising an elastomer, the seal element defining a seal element external surface portion, the seal element external surface portion defining an external perimeter. The external perimeter is adapted to increase as an environmental temperature increases, such that, in use, an increase in the environmental temperature can move the seal element external surface portion into engagement with the conduit or, once engaged with the conduit or if already engaged with the conduit, can create an improved seal with the conduit.

Abstract: A downhole tool assembly including a bridge plug and a cement retainer in tandem to be deployed into a wellbore on the same run or trip for remedial cementing of the wellbore.

Abstract: The present invention relates to a downhole straddle system for sealing off a damaged zone in a well tubular metal structure in a well having a top, comprising: a straddle assembly having a first end, a second end closest to the top, an inner face, a first hydraulic expandable annular barrier and a second hydraulic expandable annular barrier, a downhole tool assembly having a hydraulic operated deployment tool for releasable connecting the downhole tool assembly to the second end of the straddle assembly, the downhole tool assembly further comprising a first sealing unit arranged above the first hydraulic expandable annular barrier and the second hydraulic expandable annular barrier and configured to seal against the inner face of the straddle assembly, and a closing unit configured to close the first end of the straddle assembly, wherein the downhole tool assembly further comprising a sealing device arranged above the deployment tool and the first sealing unit, the sealing device has an annular sealing eleme

Abstract: An apparatus for use in a well borehole packing operation takes the form of a downhole packer and comprises a body and a seal member. In use, the apparatus is run into a borehole as part of a downhole completion assembly. On reaching the desired location, the apparatus is activated to urge the seal member into sealing engagement with the borehole, and thereby isolate an annular region between the apparatus and the borehole. A conduit is disposed within the body and is offset from a central longitudinal axis of the apparatus, the conduit configured to transport a borehole packing material, such as gravel slurry, through the apparatus.

Abstract: A rubber cylinder includes rigid seal rings on both ends, a packer, and a bridge. The rubber cylinder comprises a wire seal ring, a filament seal ring, and rigid seal rings. The wire seal ring abuts the filament seal ring and is disposed below the filament seal ring. The wire seal ring comprises a plurality of wires intersecting each other and a colloid bonding all the wires together. The filament seal ring comprises a plurality of high-temperature high-pressure resistant filaments intersecting each other and a colloid bonding all the filaments together. When the wire seal ring is disposed below the filament seal ring, friction between the wire seal ring and a central tube and/or a casing reduces an axial pressure transferred to the filament seal ring. Such reduction further reduces the occurrence of an extruded shoulder.

Abstract: The present invention relates to a downhole completion system for providing a well tubular metal structure in a borehole of a well having a top, comprising a well tubular metal structure configured to be arranged in the borehole.

Abstract: A method includes inserting a flexible cable into a cleaning region of a channel of a component via a cleaning port, rotating the flexible cable about an axis within the channel to interact a tip with deposits disposed within the cleaning region of the channel, moving the flexible cable within the cleaning region of the channel along a length of the channel, and removing portions of the deposits from the cleaning region of the channel via a second port. The flexible cable includes the axis and the tip. A diameter of the tip is different than a diameter of the flexible cable. The tip is configured to loosen the portions of the deposits.

Abstract: A method of treating a wellbore comprises supporting a first tubular member in a housing; coupling a second tubular member to the first tubular member via a connector; the first tubular member, the second tubular member, or both comprising a chemical deployment modular device charged with a plurality of particulates preloaded with a well treatment additive; and deploying the first and second tubular members into the wellbore.

Abstract: A system for emptying a gravity separated fluid including a flexible bag storing the fluid arranged within a protection structure, the protection structure including a bottom element forming the lower section of the protection structure, the flexible bag being connected to the protection structure, and includes at least one fluid conduit providing fluid communication between the flexible bag and outside the protection structure. A first outlet pipe is arranged inside the flexible bag near the bottom element and is connected to and in fluid communication with the at least one fluid conduit. A perforated tube surrounding the outlet pipe provides an annulus fluid passage, water is supplied to the structure volume, and the fluid is emptied through the at least one fluid conduit, through the perforations in the perforated tube, through the annulus fluid passage to the first outlet pipe.

Abstract: A method includes determining a first geometric parameter of an elastic component based on a second geometric parameter of the elastic component, wherein the elastic component is part of a bottomhole assembly having a bit and an eccentering mechanism operating on the elastic component. The method also includes determining a length difference of the elastic component based on the first geometric parameter, the second geometric parameter, and a stiffness factor of the elastic component. The method also includes determining a borehole curvature based on a sum of a bit tilt angle and a force-based side-cutting angle, wherein the force-based side-cutting angle is based on the length difference of the elastic component. The method also includes determining a setting of the eccentering mechanism based on the borehole curvature.

Abstract: An installation apparatus for installing a liner in a subterranean formation includes a housing having an internally arranged flexible member operatively connected to a bore-forming device at one end and to a control module at another end. An opening is arranged in a housing wall through which the flexible member and device may be passed. A liner is arranged around at least a portion of the flexible member between the opening and a first support member. The first support member is arranged to move inside the housing in a direction towards the opening, and a second support member is configured to movably support at least a portion of the flexible member in the region between the control module and the first support member. A method of installing a liner in an inverted drainhole is disclosed.

Abstract: A casing patch system comprising a base tubular with two anchor/seals coupled to the base tubular and an expansion tool comprising two expansion devices positioned such that upon expansion of the first anchor/seal, the second expansion device engages the second anchor/seal, which allows reduction of the expansion forces due to sequential expansion and reduces the length of the displacement necessary for setting the casing patch, eliminating the need for resetting the thruster, which allows deployment and setting of the casing patch on a wireline. In another embodiment, the expansion device comprises two swages coupled to a shaft at a distance between them approximately equal to the length of the anchor/seal.

Abstract: An expandable liner hanger system and method of installing same. In an exemplary embodiment, the method includes positioning the expandable liner hanger system within a casing string, the expandable liner hanger system including a setting tool disposed within a hanger body, the setting tool including a cone mandrel defining a tapered external surface and an expansion cone defining a tapered internal surface; engaging the tapered external surface with the tapered internal surface; radially expanding the hanger body to engage the casing string by displacing the cone mandrel and the expansion cone in a first axial direction and relative to the hanger body; displacing the cone mandrel in a second axial direction and relative to the expansion cone to disengage the tapered internal surface from the tapered external surface, thus permitting the expansion cone to bell radially inward from the hanger body; and extricating the expansion cone from the hanger body.

Abstract: A shaped charge comprising a case, a liner positioned within the case, and an explosive filled within the case. The liner is shaped with a subtended angle ranging from 100° to 120° about an apex, a radius, and an aspect ratio such that a jet formed with the explosive creates an entrance hole in a well casing. The jet creates a perforation tunnel in a hydrocarbon formation, wherein a diameter of the jet, a diameter of the entrance hole diameter, and a width and length of the perforation tunnel are substantially constant and unaffected with changes in design and environmental factors such as a thickness and composition of the well casing, position of the charge in the perforating gun, position of the perforating gun in the well casing, a water gap in the wellbore casing, and type of the hydrocarbon formation.

Abstract: Systems and methods for removing fluid from a subterranean well with a fluid removal system includes lowering an elongated member into tubing of the subterranean well to a lower position, the elongated tubing having a plunger or valve body located at an end, wherein fluid passes past the plunger or through a valve opening as the valve body moves into the subterranean well. The plunger or valve body is moved in a direction out of the subterranean well so that fluid cannot pass the plunger or through the valve opening, moving the fluid out of the subterranean well.

Abstract: Permanent magnet motor (PMM) powered artificial lift apparatus and methods of practicing the same. The PMM artificial lift apparatus provides a method for the use of permanent magnet motors below perforations, and which may also be used in conditions of low flow rate or extremely high viscosity above perforations without any active cooling schemes.

Abstract: A multi-stage fracturing sliding sleeve is provided, which comprises a fracturing pipe, a shear slip device, a fracturing sleeve, a ball seat support, a first sliding sleeve and a limiting sleeve, the fracturing sleeve seals fracturing ports, the ball seat support and the fracturing pipe are connected through at least one first shear pin, a first spring is arranged between the first sliding sleeve and the limiting sleeve, a second sliding sleeve is arranged below a multi-segment ball seat and connected with the first sliding sleeve, an outer wall of the first sliding sleeve comprises a downward facing annular shoulder, an inner wall of the limiting ring comprises an upward facing annular shoulder, the first spring is located between the downward facing annular shoulder and the upward facing annular shoulder, and an upper end face of the limiting ring limits the axial travel of the first sliding sleeve.

Abstract: The present invention provides a method and system for providing on-site electrical power to a fracturing operation, and an electrically powered fracturing system. Natural gas can be used to drive a turbine generator in the production of electrical power. A scalable, electrically powered fracturing fleet is provided to pump fluids for the fracturing operation, obviating the need for a constant supply of diesel fuel to the site and reducing the site footprint and infrastructure required for the fracturing operation, when compared with conventional systems. The treatmenr fluid can comprise a water-based fracturing fluid or a waterless liquified petroleum gas (LPG) fracturing fluid.

Abstract: A downhole sub for injecting and detonating liquid explosive into a subterranean formation has a first fluid chamber, a second fluid chamber, a piston slidably disposed between and separates the first fluid chamber and the second fluid chamber, and a detonation unit affixed to the piston. It also has a third fluid chamber, a coupling disposed between the second fluid chamber and the third fluid chamber, and an annular sealing device disposed about the downhole sub. During operation, the downhole sub is filled with a liquid explosive and lowered into a well. A hydraulic fluid is injected into the downhole sub to initiate a process in which a portion of the well casing having a plurality of perforations in its wall is isolated from the rest of the well first, the liquid explosive is then injected into the isolated portion, and from there into the surrounding subterranean formation, and finally ignited to create fractures in the formation.

Abstract: Hydrocarbon gas treatment systems and methods. The hydrocarbon gas treatment systems include a feed gas supply system configured to provide a feed gas stream and a hydrogen sulfide removal system configured to separate the feed gas stream into a product gas stream and an acid gas stream. The hydrocarbon gas treatment systems also include a heat exchanger configured to cool the acid gas stream to generate a cooled acid gas stream and an acid gas enrichment system configured to separate the cooled acid gas stream into a treated gas stream and an enriched acid gas stream. The methods include providing a feed gas stream, separating the feed gas stream into a product gas stream and an acid gas stream, cooling the acid gas stream to generate a cooled acid gas stream, and separating the cooled acid gas stream into a treated gas stream and an enriched acid gas stream.

Abstract: A system includes a surface coil positioned at a known surface position, the surface coil including at least one loop of a conductor. The system also includes a coil controller coupled to the surface coil and adapted to inject a current into the surface coil such that the surface coil generates an electromagnetic field. In addition, the system includes a sensor package positioned within a wellbore adapted to detect the electromagnetic field and determine the position of the wellbore relative to the surface coil.

Abstract: A sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation, such as a subterranean formation containing a hydrocarbon based fluid. The sensor arrangement may be used to measure one or more physical parameters, such as temperature and/or pressure, at a multiplicity of locations in the subterranean reservoir. The sensor arrangement may comprise a sensor array comprising an elongated outer casing for insertion in the subterranean formation and into a fluid in the subterranean formation. The sensor array may comprise an optical fiber defining an optical path that links one or more temperature sensors and one or more pressure sensors and transports measurement data generated by the temperature and pressure sensors. A data processing system may be connected to the sensor array to receive measurements from the sensor array and to compute one or more values of a property of an extraction installation operating on the subterranean formation.

Abstract: An isolation valve for use with a tubular string includes a tubular housing for connection with the tubular string; a first closure member disposed in the housing and movable between an open position and a closed position; a second closure member disposed in the housing and movable between an open position and a closed position; a chamber formed between the first closure member and the second closure member when the first and second closure members are in the closed position; and a leak detection device configured to measure a fluid flow into the chamber.

Abstract: A method and system are described for wirelessly communicating within a wellbore. The method includes constructing a communication network, which communicates during drilling operations along one or more drilling strings. The communication network is used to perform drilling operations for hydrocarbon operations, such as hydrocarbon exploration, hydrocarbon development, and/or hydrocarbon production.

Abstract: A well completion system and related methods are disclosed. The methods utilize mapped geological formation characterization data based on mechanical specific energy (MSE) values to determine a well completion scenario and executes the well completion scenario.

Abstract: A device and a method for evaluating a gas-water two-phase flow fracture conductivity of a fractured shale. The device includes a seepage system, an injection system, a data collecting and processing system and a three-axis shale core holder, wherein the seepage system is subjected to two stages including a water injection stage and a gas flooding stage. When using the device, firstly the initial permeability and initial mass of the shale sample are determined; the water influx test is performed by injecting water to the shale sample until flow rate of the water discharged from the shale core is stable, then the water injection is ended. After the drying device is installed, the shale sample is subjected to gas flooding, and the aqueous fracturing fluid discharged by the gas flooding is collected until the flow meter determines that the gas volume is stable, and then the gas flooding is ended.

Abstract: The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for determining a mudweight of drilling fluids in a hydrocarbon reservoir. One computer-implemented method includes: receiving pore pressure data of a rock formation in the hydrocarbon reservoir; determining permeability data of fractures of the hydrocarbon reservoir; determining Hoek-Brown failure criterion data; and determining a safe mudweight window based on the pore pressure data of the rock formation, the permeability data of the fractures, and the Hoek-Brown failure criterion data.